Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e483e12145213ec…

MALICIOUS

PDF

82.3 KB Created: 2021-09-16 07:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9f5d3c40b2d6634df63018821eb7246c SHA-1: d6cedc87a09b01bf013e5219bc65e137170b2438 SHA-256: 7e483e12145213ece3fdf5421fcdd00334e0faa7687efe8cb1781703f4568ff1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous URLs, many of which point to other PDF files hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics and the nature of the URLs indicate an attempt to lure users to external resources, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://drafthe.ru/uplcv?utm_term=hungry+shark+evolution+apk+mod+hack PDF link annotation
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/xukawa.pdfIn PDF document text
    • http://thrifty-uy.com/files/others/36611540947.pdfIn PDF document text
    • http://retailcop.ca/files/newetovevanisaj.pdfIn PDF document text
    • http://marketingnews.fr/images/file/82907332791.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613e59ff58857---66272749467.pdfIn PDF document text
    • https://pingthye.com/userfiles/files/nisozuliwivotifane.pdfIn PDF document text
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/50689491316.pdfIn PDF document text
    • https://mtmhomeschool4art.com/mycms/uploadedimages/editorUploadedImages/file/72799246769.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16139f87f239b6---lukokatetubaronakir.pdfIn PDF document text
    • https://radiosmile.hu/upload/file/30768484882.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210905155945.pdfIn PDF document text
    • https://nistd.in/userfiles/file/2455173522.pdfIn PDF document text
    • https://jotekonybakterium.hu/userfiles/files/warero.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/4a35753fc32ed3e88ff3204d0c4be644/12152939828.pdfIn PDF document text
    • https://exam11.menapoint.com/app/webroot/upload/files/50366081779.pdfIn PDF document text
    • https://ecpa.fr/uploaded/file/ratino.pdfIn PDF document text
    • http://ankaraeksioglu.com/resimler/files/1400561674.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613f3bf0197fc---gisukab.pdfIn PDF document text
    • https://itandem.net/ckfinder/userfiles/files/kujaxesuxupuxapolap.pdfIn PDF document text
    • http://duocmyphamcongty.com/app/webroot/uploads/files/towateril.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b53b44bfe2---kikaremotojudopum.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4e8263eef---puledarurawuzudamabux.pdfIn PDF document text
    • http://thriftstorewebsites.com/flash/thriftstorewebsites.com/file/bogetagab.pdfIn PDF document text
    • http://studioarchterreni.it/userfiles/files/46442572879.pdfIn PDF document text
    • http://snap-drone.com/userfiles/file/95877615111.pdfIn PDF document text
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16141ab256fec8---95566133036.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/167d890257a9c399425ca0cc0d95e95b/8344247178.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2F 17756 bytes
SHA-256: a22f539f6a4ea21bb0686d1a7aa34df1adf78530e2ebe0c2ddf50e85df1799e6
font_01_sfnt_off00010915.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10915 11324 bytes
SHA-256: 3b96c40512ad2d63a14940f51191231b164ce7e7e19730fa23644b6a55ee8666
font_02_sfnt_off00012352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12352 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.